NavList thread: Dip Variation by Theodolite
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03 Jan 2014, 02:12 | Bruce J. Pennino
03 Jan 2014, 07:50 | Marcel Tschudin
03 Jan 2014, 21:29 | Frank Reed
03 Jan 2014, 22:09 | Bruce J. Pennino
03 Jan 2014, 22:23 | Frank Reed